Advanced Troubleshooting: Dell Dimension E520 Service Manual
CMOS
Checksum
Failure
CMOS System
Options Not
Set
CMOS Display
Type
Mismatch
CMOS Memory
Size
Mismatch
CMOS Time
and Date Not
Set
Diskette
Boot Failure
DMA Error
DMA 1 Error
DMA 2 Error
FDD
Controller
Failure
HDD
Controller
Failure
INTR1 Error
INTR2 Error
Invalid Boot Diskette
Keyboard
Error
KB/Interface Error
No ROM
Basic
information in the system setup program is incorrect or the battery charge may be low.
Drive A or B is present but has failed the BIOS POST.
Error in the DMA controller on the system board.
The BIOS cannot communicate with the floppy drive or hard drive controller.
An interrupt channel on the system board failed to POST.
The operating system cannot be located on drive A or drive C.
The BIOS has detected a stuck key.
An error occurred with the keyboard connector.
The operating system cannot be located on drive A or drive C.
System Setup), verify the system configuration, and then restart the computer.
Ensure that the drive is installed correctly in the computer and defined correctly in the system setup program (see Entering System Setup). Check the interface cable at both ends.
The keyboard or system board may need to be replaced.
Ensure that the floppy drive or the hard drive is installed correctly in the computer (see Drives) and defined correctly in the system setup program (see Entering System Setup). Check the interface cable at both ends.
The keyboard or system board may need to be replaced.
Enter the system setup program (see Entering System Setup)and confirm that drive A or drive C is properly identified.
Ensure that nothing is resting on the keyboard; if a key appears to be stuck, carefully pry it up. If the problem persists, you may need to replace the keyboard.
Ensure that nothing is resting on the keyboard; if a key appears to be stuck, carefully pry it up. If the problem persists, you may need to replace the keyboard.
Enter the system setup program (see Entering System Setup) and confirm that drive A or drive C is properly identified.
Dell Diagnostics
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
NOTE: The Dell Diagnostics only operate on Dell computers.
Starting the Dell Diagnostics
1. Turn on (or restart) your computer.
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